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Diodes Incorporated SMBJ22AQ-13-F
- Part No.:
- SMBJ22AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22AQ-13-F.pdf
- Description:
- TVS DIODE 22VWM 35.5VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
SMBJ22AQ-13-F from Diodes Incorporated is a unidirectional 600W surface-mount automotive transient voltage suppressor (TVS) diode with 22V reverse standoff voltage, 35.5V max clamping voltage at 16.9A peak pulse current, and AEC-Q101 qualification for ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD protection in vehicle power-line interfaces.
For engineers reviewing the SMBJ22AQ-13-F datasheet, SMBJ22AQ-13-F pinout, SMBJ22AQ-13-F application, or SMBJ22AQ-13-F equivalent, this part supports critical surge immunity design in automotive body control modules, infotainment power rails, and ADAS sensor supply lines where precise clamping, low leakage (<0.5µA @ 22V), and IATF 16949 traceability are required.
Technical Context
This unidirectional TVS operates as a fast-acting shunt clamp during transients, triggering at 24.4V minimum breakdown voltage (VBR) with 1mA test current and clamping to ≤35.5V under 10×1000µs waveform. It sustains 100A non-repetitive forward surge (8.3ms half-sine) and exhibits 3.5V forward voltage at 35A.
Designed for automotive-grade reliability, it features -55°C to +175°C operating junction temperature, 5W steady-state power dissipation at TL = +75°C, and 4.8W/°C derating above +25°C ambient - enabling robust thermal management in engine bay and under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - handles ISO7637-2 Pulse 3b (+150V) without failure |
| Reverse Standoff Voltage (VRWM) | 22V - blocks normal 12V/24V automotive battery rail noise |
| Max Clamping Voltage (VC) | 35.5V @ IPP = 16.9A - limits downstream IC stress during load dump |
| Breakdown Voltage (VBR) | 24.4V min @ 1mA - ensures reliable turn-on before system damage threshold |
| Leakage Current (IR) | <0.5µA @ 22V - prevents battery drain in always-on vehicle circuits |
| Operating Temperature | -55°C to +175°C - supports placement near high-heat sources like ECUs and inverters |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic, UL 94V-0 rated, 0.1g weight, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground | Completes clamping path during negative transients (Pulse 1, 3a) |
| Cathode | High-side connection to protected line (e.g., battery feed) | Provides unidirectional conduction; marked by cathode band on top surface |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified, PPAP capable, manufactured in IATF 16949 certified facilities |
| ESD immunity | 30kV air/contact discharge per ISO10605 (150pF/330Ω) |
| Surge compliance | Fully meets ISO7637-2 Pulse 1 (-150V), 2a (+112V), 3a (-220V), 3b (+150V) |
| Green construction | RoHS 3 compliant, halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Body Control Module (BCM) Power Input | Infotainment System 12V Rail |
|---|---|
Use Scenario: Protects BCM microcontroller and CAN transceivers from load dump and jump-start surges on fused battery feed. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and GND, clamping within 1ns response time. Use Value: Limits voltage to 35.5V during 16.9A transient, preventing latch-up or gate oxide rupture in 3.3V/5V logic. |
Use Scenario: Shields USB-C PD controllers and display drivers from ignition-induced spikes on main 12V supply. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converters, absorbing 600W pulses without degradation. Use Value: Maintains <0.5µA leakage to avoid standby current exceedance in key-off state. |
| Rear Camera Power Line | ADAS Radar Sensor Supply |
Use Scenario: Secures 5V camera module input against ESD events during connector mating/unmating in trunk area. IC Role / Device Role / Timing Role: Fast-response TVS adjacent to connector, referenced to chassis ground with minimal trace inductance. Use Value: Withstands 30kV contact discharge while adding only 0.5pF parasitic capacitance at zero bias. |
Use Scenario: Guards 24V radar supply against coupled transients from nearby high-current actuators and motor drives. IC Role / Device Role / Timing Role: High-energy clamping device mounted directly at radar module input connector. Use Value: Sustains 100A 8.3ms surge without parametric shift, ensuring continuous operation during active safety maneuvers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-13-F | No AEC-Q101 qualification; standard industrial grade | Not approved for production automotive programs requiring PPAP documentation | Select only for non-safety-critical prototyping or aftermarket modules |
| SMCJ22A-Q | Higher 1500W rating, SMC package (larger footprint, higher thermal mass) | Used where >600W surge margin is mandated (e.g., alternator output lines) | Choose when board space allows SMC and system-level testing requires 2.5× energy headroom |
Compared with SMBJ22AQ-13-F, SMBJ22A-13-F lacks automotive change control and traceability, while SMCJ22A-Q trades PCB area for higher surge capacity - making the AQ variant optimal for space-constrained, production-grade 12V/24V automotive nodes requiring certified reliability.
Availability
SMBJ22AQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power conditioning, and ADAS sensor protection requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMBJ22AQ-13-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets.
This part belongs to the SMBJ-AQ automotive TVS family, engineered specifically for ISO7637-2 and ISO10605 compliance in harsh-temperature vehicle environments with full IATF 16949 manufacturing control.
FAQ
What is the polarity configuration of SMBJ22AQ-13-F?
SMBJ22AQ-13-F is a unidirectional TVS diode with anode and cathode terminals. The cathode is marked by a visible band on the top surface of the SMB package. It conducts only during reverse-biased transients - i.e., when the cathode voltage exceeds the anode by ≥24.4V - and blocks forward current up to 3.5V at 35A.
Does SMBJ22AQ-13-F meet AEC-Q101 requirements for temperature cycling?
Yes - it is fully AEC-Q101 qualified, including temperature cycling (Test Condition D), with guaranteed operation from -55°C to +175°C junction temperature. Its construction uses matte tin-plated terminals, mold compound rated to UL 94V-0, and internal wirebonding validated for 1000 cycles between -40°C and +125°C.
Can SMBJ22AQ-13-F be used in bidirectional configurations?
No - SMBJ22AQ-13-F is unidirectional only. For bidirectional protection, Diodes offers SMBJ22CAQ-13-F (with 'C' suffix), which provides symmetrical clamping for both polarities and is marked without a cathode band. The AQ suffix denotes automotive qualification in both variants.
What is the maximum allowable PCB trace length between SMBJ22AQ-13-F and protected IC?
To maintain effective clamping, total inductance from TVS to protected node must stay below ~10nH. For typical 1oz copper, this limits trace length to ≤8mm with 0.3mm width and adjacent ground plane - verified via SPICE simulation using the device's 0.5pF junction capacitance and sub-nanosecond response time.
SMBJ22AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMBJ22AQ-13-F FAQ
1.How can I place an order for SMBJ22AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22AQ-13-F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ22AQ-13-F reliable?
The price and inventory of SMBJ22AQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ22AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ22AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22AQ-13-F?
SMBJ22AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22AQ-13-F order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ22AQ-13-F?
For technical support, including SMBJ22AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22AQ-13-F requirements.
6.How does Aetrix verify that SMBJ22AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ22AQ-13-F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ22AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ22AQ-13-F?
All SMBJ22AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22AQ-13-F, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ22AQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ22AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22AQ-13-F Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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